was Liu Bang a great ruler? What are the important accomplishment Liu Bang made

Steven, we can not easily judge a person. He led his army to defeat Xiang Yu and finally unified China again. I think this is his biggest accomplishment. However, he was a cruel ruler. You know, he killed many people who helped him estabish Han Dynasty, for example, Han Xin.

Dude. Happens all the time. When a guy becomes emperor, he's afraid his general will revolt against him. That's why smart generals retire after that war